Attachment to furnaces.



E. J. McMILLAN.

ATTACHMENT o FURNACES. APPLICATION FILED A PR.20' 1917.

14259 761, 5 Patented Mar.19,1918.

ERNEST JAMES MOMILLAN, 0F MOOSE JAW, SASKATCHEWAN, CANADA.

a'r'rncnmnna' r0 summons.

Specification of Letters Patent.

' Patented Mar. 119, rats.

Application filed April 20, 1917. Serial No. 163,495.

To all whom it may concern:

Be it known that I, ERNEST JAMES Mo- MILLAN, of the city of Moose Jaw, in the Province of Saskatchewan, Canada, have invented certain new and useful Improvements in Attachments to Furnaces, of which the following is the specification.

The invention relates to improvements in attachments to furnaces, particularly hot air furnaces and the object of the invention is to provide an inexpensive, simply construct ed, easily operated and installed appliancefor supplying moisture to the hot air of the furnace for circulation with the air through the building, said appliance being constructed so that the quantity of moisture can be positively controlled and adjusted.

With the above object in view the invention consists essentially in a drip receiver mounted in the hot air chamber of the furnace, a drip tube leading from a source of water supply to the receiver and means for controlling the flow of water throu h the tube, the parts being arranged an constructed as hereinafter more particularly described and later pointed out in the appended claims, reference being had to the accompanying drawing in which:

Figure 1 represents my attachment asapplied to a hot air furnace.

Fig. 2 represents an enlarged detailed horizontal sectional view through the lower part of the drip receiver.

Fig. 3 represents an enlarged detailed vertical sectional view through the upper part of the drip receiver.

Fig. 4 represents an enlarged detailed vertical sectional view centrally through the drip receiver.

Fig. 5 represents a vertical sectional view through the adjusting valve.

Fig. 6 represents a vertical sectional view through the drip sight feed.

In the drawing like characters of reference indicate corresponding parts in the several figures. I

In the following description I wish it to be understood that while a furnace of particular form has been shown, stillthis appliance can be attached to any hot air furnace, it being only necessary to place the dri receiver in the hot air chamber and fee the waterto it in whatever location it may be.

- 1 represents a hot air furnace of ordinary form of which Q'is the dome, 3 the outer casing, 4 the hot air chamber, 5 the return circulating pipes and 6 the hot air pipes leading to the various floors of the building.

Centrally on top of the dome of the furnace I place my drip receiver 7 this location being chosen as it is preferably the most convenient and effective. The receiver, in the present instance, is made from an absorbent fire proof material such as fire brick and it comprises a bottom piece or base 8 and a top or'closure piece 9 sitting on the base. The base piece is hollowed out to provide an inner chamber 10 and outlet ducts 11 radiating from the chamber. The chamber is closed over by the top piece when applied and the top piece is fitted with a single central opening 12.

To the drip receiver I lead a hollow water tube 13 which has the one end thereof passing through the opening 12 and opening to the chamber 10 and the other end thereof connected to a source of water supply which, in isolated cases can be a tank and in locations such as cities and towns can be connected to the city water supply pipe as indicated at 14.

At the point where the tube enters the furnace I supply a coupling 15 so that it can bereadily detached. In the tube and preferably in a location adjoining the usual controls for the furnace dampers which are generally on the first floor, I insert a controlling valve 16 and a drip sight feed 17.

The controlling valve is shown in the pres-' ent instance as a needle valve which will allow of the very fine and positive regulation of the flow of the water through the mains will force the water constantly.

through the tube to the chamber.

The water admitted to the chamber drops on to the base piece' and owing to the heat of the furnace is vaporized and isdistributed evenly around within the heating chamber to mix with the hot air finding egress from the chamber 10 to the heating chamber through the ducts 11 which it will be remembered radiate and consequently effect an even distribution of the moisture.

Accordingly then the hot air in the heat ing will be charged with moisture which is carried through the heat pipes 6 to the various rooms and there distributed.

I have made the drip receiver from fire brick for the reason that it will not become burnt nor oxidized in use and further for the reason that it is of an absorbing nature and will absorb a certain amount of the water dropped on to it which will be gradually given off in vapor.

It will be readily seen that this appliance owing to the easy manner in which it can be regulated can be depended upon to charge the air with moisture in whatever quantity is required thereby satisfying the most fastidious persons.

Further it will be noted that once installed it requires practically no attention as the water under pressure feeds itself to the chamber 10 in a regulated quantity.

What I claim as my invention is 1. The combination with the hot air chamber and the dome of a hot air furnace, of a fire proof water drip receiver mounted centrally 'on the top side of the dome and within the hot air chamber and provided with an inner chamber having radiating outlet ducts passing therefrom and a drip pipe connected with a water supply and communicating with the chamber within the drip receiver.

2. The combination with the hot air chamber and the dome of a hot air furnace, of a fire proof water drip receiver mounted on the top side of the dome and within the hot air chamber, a water tube leading from a water supply to the receiver, and a controlling valve and sight glass inserted in the water tube.

3. A water drip receiver formed of a fire proof absorbent material and having an inner chamber, an inlet opening in the top of the chamber and moisture radiating ducts leading from the chamber.

Signed at Winnipeg, this 9th day of April, 

